/***************************************************************************
*                               Insensitive.cs
*                            -------------------
*   begin                : May 1, 2002
*   copyright            : (C) The RunUO Software Team
*   email                : info@runuo.com
*
*   $Id: Insensitive.cs 567 2010-10-20 01:09:57Z asayre $
*
***************************************************************************/

/***************************************************************************
*
*   This program is free software; you can redistribute it and/or modify
*   it under the terms of the GNU General Public License as published by
*   the Free Software Foundation; either version 2 of the License, or
*   (at your option) any later version.
*
***************************************************************************/

using System;
using System.Collections;

namespace Server
{
    public static class Insensitive
    {
        private static readonly IComparer m_Comparer = CaseInsensitiveComparer.Default;

        public static IComparer Comparer
        {
            get
            {
                return m_Comparer;
            }
        }

        public static int Compare(string a, string b)
        {
            return m_Comparer.Compare(a, b);
        }

        public static bool Equals(string a, string b)
        {
            if (a == null && b == null)
                return true;
            else if (a == null || b == null || a.Length != b.Length)
                return false;

            return (m_Comparer.Compare(a, b) == 0);
        }

        public static bool StartsWith(string a, string b)
        {
            if (a == null || b == null || a.Length < b.Length)
                return false;

            return (m_Comparer.Compare(a.Substring(0, b.Length), b) == 0);
        }

        public static bool EndsWith(string a, string b)
        {
            if (a == null || b == null || a.Length < b.Length)
                return false;

            return (m_Comparer.Compare(a.Substring(a.Length - b.Length), b) == 0);
        }

        public static bool Contains(string a, string b)
        {
            if (a == null || b == null || a.Length < b.Length)
                return false;

            a = a.ToLower();
            b = b.ToLower();

            return (a.IndexOf(b) >= 0);
        }
    }
}